Seagull TY3620.2B mechanical movement - Based on Unitas 6498 or ETA 6498, New
Skeleton

Based on UT 6498 (Pocket Watch)

• Size Ø37.20mm
• Height 4.50mm
• Hour & Minute
• Sub Dial: Small Seconds @ 6 h
• Hand Sizes: Min 1.15, Hr 2.00, Sec 0.28
• Stem Position @ 3 h
• Loose Pack

For info: The Seagull Motion Factory is the largest manufacturer of Chinese mechanical movements (AKA The Chinese ETA!). I can supply all their calibres (some calibres require a longer delivery time).
Seagull's movements are better qualities and more reliable than those of other small factories that copy them.
Seagull has the most varieties in terms of functionality and because of the higher quality can be more expensive.
If you have any questions do not hesitate.

Popular Chinese Movements:
 

• ETA 2824.2 Chinese equivalent = web-horloger Reference: TY2130M & TY2130GM
• ETA 2836.2 Chinese equivalent = web-horloger: TY2100M & TY2100GM
• ETA 2892.A2 Chinese equivalent = web-horloger: CHST18M
• UT 6497 Chinese equivalent = web-horloger Reference: CHI3600M & CHITY36002M
• UT 6498 Chinese equivalent = web-horloger Reference: CHI3620M & CHITY 36202BM
• Valjoux 7750 Chinese equivalent* = web-horloger Reference: CH3LZF2M
• Valjoux 7753 Chinese equivalent* = web-horloger Reference: CH3LZF1M

*Check specifications for your specific movement